Is there a way to can an image on OSX using only 256 colors rather than millions or billions?
I am scanning maps which only use a few colors, so I think I want to keep the color depth low so there is clear separation between lines and background (kind of like B&W vs. Gray Scale). Note I want to do this at scan time to improve the scan.
I am on 10.7.4 with a HP C4599. HP Scan doesn't let change the color depth at all. Preview (or Image Capture) only let's me choose between millions and billions.